Siri made its debut with the release of iOS 5 on the iPhone 4S in 2011, revolutionising voice recognition on smartphones. In 2013, iOS 7 brought a sleek, minimalistic design to Siri's interface. By 2017, iOS 11 introduced a dynamic glowing orb design, enhancing its visual appeal. This design was refined further in 2021 with smoother animations. Looking ahead to 2024, Siri is anticipated to evolve into a 3D holographic assistant, offering even more interactive and animated features.